Invention Grant
- Patent Title: Flexible container coating compositions
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Application No.: US17534720Application Date: 2021-11-24
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Publication No.: US11702562B2Publication Date: 2023-07-18
- Inventor: Huy Lai , Kris M. Kazik , Keri Veres
- Applicant: PPG Industries Ohio, Inc.
- Applicant Address: US OH Cleveland
- Assignee: PPG Industries Ohio, Inc.
- Current Assignee: PPG Industries Ohio, Inc.
- Current Assignee Address: US OH Cleveland
- Main IPC: C09D167/00
- IPC: C09D167/00 ; C09D167/02 ; C08G63/91 ; B05D7/14 ; B21D22/20 ; B21D51/26 ; B65D1/16 ; B65D23/02

Abstract:
A coating composition includes: (a) 60 to 90 percent by weight of an active hydrogen-containing polyester having a number average molecular weight of at least 23,000, an acid value below 5 and a hydroxyl value below 10, (b) 0.1 to 10 percent by weight of a polyanhydride, and (c) 5 to 30 percent by weight of a curing agent reactive with the active hydrogens associated with (a) and (b), the percentages being based on weight of resin solids of the coating composition, where the reaction product of the coating composition forms a single coating without including a thermoplastic polymer. The coating composition is useful in coating food and beverage containers, particularly 2-piece cans formed by drawing and redrawing (DRD).
Public/Granted literature
- US20220081586A1 Flexible Container Coating Compositions Public/Granted day:2022-03-17
Information query
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